HP (Hewlett-Packard) t2808-90006 Manuale Utente
Managing an MD Device
Removing and Adding an MD Mirror Component Disk
Appendix A
102
Example A-3
Removing a failed MD component disk from
/dev/md0
array
To remove a failed MD component disk from
/dev/md0
, run the following
command:
# mdadm –-remove /dev/md0 /dev/hpdev/sde
Following is an example of the status message that is displayed when a
failed component is removed from the MD array:
failed component is removed from the MD array:
[root@dlhct1 dev]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdf[0]
9766784 blocks [2/1] [U_]
unused devices: <none>
Adding a Mirror Component Device
As mentioned earlier, in certain failure scenarios, you need to remove a
failed mirror disk component, repair it and then add it back into an MD
array. Run the following command to add a mirror component back into
the MD array:
failed mirror disk component, repair it and then add it back into an MD
array. Run the following command to add a mirror component back into
the MD array:
# mdadm - -add <md device name>
<md_mirror_component_persistent_name>
Example A-4
Adding a new disk as an MD component to
/dev/md0
array
To add a new disk to the /dev/md0 array, run the following command:
# mdadm - -add /dev/md0 /dev/hpdev/sde
Following is an example of the status message displayed in the
/proc/mdstat
file once the disk is added:
Personalities : [raid1]
md0 : active raid1 sde[2] sdf[0]
9766784 blocks [2/1] [U_]
[=>...................] recovery = 8.9% (871232/9766784) finish=2.7min
speed=54452K/sec
unused devices: <none>